推送通知未到达

Question

我正在使用 Xamarin 开发一个 android 应用程序，而对于推送通知，我正在使用 PushSharp。 在应用程序未运行时（例如重新启动后），我在接收推送通知时遇到了一些问题。这是服务代码：

[BroadcastReceiver(Permission=GCMConstants.PERMISSION_GCM_INTENTS)]
    [IntentFilter(new string[] { GCMConstants.INTENT_FROM_GCM_MESSAGE }, Categories = new string[] { "com.xxx" })]
    [IntentFilter(new string[] { GCMConstants.INTENT_FROM_GCM_REGISTRATION_CALLBACK }, Categories = new string[] { "com.xxx" })]
    [IntentFilter(new string[] { GCMConstants.INTENT_FROM_GCM_LIBRARY_RETRY }, Categories = new string[] { "com.xxx" })]
    [IntentFilter(new[] { Android.Content.Intent.ActionBootCompleted })]
    public class PushHandlerBroadcastReceiver : PushHandlerBroadcastReceiverBase<PushHandlerService>
    {
        //IMPORTANT: Change this to your own Sender ID!
        //The SENDER_ID is your Google API Console App Project ID.
        //  Be sure to get the right Project ID from your Google APIs Console.  It's not the named project ID that appears in the Overview,
        //  but instead the numeric project id in the url: eg: https://code.google.com/apis/console/?pli=1#project:785671162406:overview
        //  where 785671162406 is the project id, which is the SENDER_ID to use!
        public static string[] SENDER_IDS = new string[] {"1234"};

        public const string TAG = "PushSharp-GCM";
    }

这里是创建的 appManifest：

 <receiver android:permission="com.google.android.c2dm.permission.SEND" android:name="xxx.PushHandlerBroadcastReceiver">
      <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <category android:name="com.xxx" />
      </intent-filter>
      <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
      </intent-filter>
      <intent-filter>
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="com.xxx" />
      </intent-filter>
      <intent-filter>
        <action android:name="com.google.android.gcm.intent.RETRY" />
        <category android:name="com.xxx" />
      </intent-filter>
    </receiver>
    <service android:name="xxx.PushHandlerService" />

我的服务代码很基础：

[Service] //Must use the service tag
    public class PushHandlerService : PushHandlerServiceBase
    {
        public PushHandlerService () : base (PushHandlerBroadcastReceiver.SENDER_IDS)
        {
        }

        protected override void OnRegistered (Context context, string registrationId)
        {
            ...
        }

        protected override void OnUnRegistered (Context context, string registrationId)
        {
            ...

        }

        protected override void OnMessage (Context context, Intent intent)
        {
            ...
        }

        protected override bool OnRecoverableError (Context context, string errorId)
        {
            ...
        }

        protected override void OnError (Context context, string errorId)
        {
            ...
        }

        void createNotification (string title, string desc, Intent intent)
        {
            ...
        }
    }

我错过了什么吗？为什么手机重启后服务没有启动。我应该在广播接收器中做些什么吗？我是否应该在服务构造函数中注册推送通知（以处理应用尚未启动的情况）？

Answer 1

如果您的服务在重新启动时未启动，您可以将 BroadcastReceiver 添加到启动它的项目中：

[BroadcastReceiver]
[IntentFilter(new[] { Intent.ActionBootCompleted })]
public class MyBootReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        MyNotificationService.RunIntentInService(context, intent);
        SetResult(Result.Ok, null, null);
    }
}

如果您使用的是PushSharp，则可以将该过滤器添加到PushHandlerBroadcastReceiverBase 实现中。